A strong storm developed along the east coast sea breeze and ahead of the west coast sea breeze, producing a funnel cloud.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS MLB wrote it up.
A strong storm developed along the east coast sea breeze and ahead of the west coast sea breeze, producing a funnel cloud.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Melbourne, FL wrote its last area forecast discussion before the first event at Aug 12, 1:51 PM EST, 34 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MELBOURNE FL 251 PM EDT SUN AUG 12 2012 .DISCUSSION... CURRENTLY/TONIGHT...DEBRIS CLOUD COVER FROM SCATTERED CONVECTION OVER WEST CENTRAL FLORIDA IS SPREADING ACROSS THE AREA AS EXPECTED. THIS WILL LIMIT HEATING/INSTABILITY INTO THE REST OF THE AFTERNOON WITH SHOWERS/STORMS ALREADY SHOWING A WEAKENING TREND AS THEY MOVE INTO EAST CENTRAL FLORIDA. STILL...WILL SEE CHANCE OF RAIN WHETHER IT BE LIGHT PRECIP FROM REMNANTS OF STORMS OR A FEW STRONGER STORMS THAT CAN HOLD TOGETHER OR DEVELOP FROM BOUNDARY COLLISIONS WITH THE EAST COAST SEA BREEZE THROUGH SUNSET. LINGERING ISOLATED CONVECTION INTO EARLY EVENING SHOULD DISSIPATE OR MOVE OFFSHORE BY MIDNIGHT. MID/UPPER LEVEL CLOUD COVER MAY LINGER OVERNIGHT AT LEAST MAKING FOR PARTLY CLOUDY CONDS. LOWS WILL REACH THE LOW/MID 70S. MONDAY...SURFACE RIDGE AXIS MAKES IT AS FAR NORTH AS LAKE OKEECHOBEE INTO TOMORROW...BEFORE AN UPPER LEVEL TROUGH BEGINS TO REDEVELOP OVER THE EASTERN UNITED STATES. DEEPER MOISTURE WILL BUILD NORTH WITH THE S/SW FLOW ASSOCIATED WITH THE RIDGE. WILL THEREFORE INCREASE RAIN CHANCES TO 50 PERCENT OVER THE ENTIRE AREA. LIMITING FACTOR IN HIGHER COVERAGE OF AFTERNOON SHOWERS AND STORMS WILL CONTINUE TO BE INCREASING MID/UPPER LEVEL DEBRIS CLOUDS FROM CONVECTION OVER WEST CENTRAL FLORIDA. A FEW STRONG STORMS WILL STILL BE POSSIBLE ESPECIALLY WITH ANY BOUNDARY COLLISIONS LATE DAY WITH THE EAST COAST SEA BREEZE. WILL KEEP HIGHS NEAR NORMAL AROUND 90 TO LOW 90S WITH EXPECTED INCREASE IN CONVECTION/CLOUD COVER. TUES-SAT...(MODIFIED PREVIOUS DISCUSSION) SURFACE RIDGE AXIS WILL REMAIN NEAR LAKE OKEECHOBEE INTO MID WEEK BEFORE SLOWLY SHIFTING SOUTH INTO LATE WEEK/WEEKEND. PROXIMITY OF THE RIDGE AXIS RESULTS IN A WEAK PRESSURE GRADIENT OVER THE AREA. THIS WILL ALLOW SEA BREEZES TO FORM ON BOTH THE EAST AND WEST SIDE OF CENTRAL FLORIDA AND PUSH INLAND DURING THE AFTERNOON. HOW FAR INLAND WILL BE A FUNCTION OF WHERE THE RIDGE AXIS IS. FURTHER SOUTH WOULD MEAN THE WEST COAST BREEZE SHOULD PUSH FURTHER EAST KEEPING STORMS AND SHOWERS CONFINED TO THE EAST HALF OF CENTRAL FLORIDA. IF THE RIDGE AXIS IS MORE NORTH...THE EAST COAST BREEZE WOULD PUSH FURTHER INLAND TENDING TO CONCENTRATE THE STORMS ON THE WESTERN HALF OF CENTRAL FLORIDA. DEEP SOUTH TO SOUTHWEST FLOW WILL ALSO KEEP MOISTURE LEVELS HIGH ENOUGH FOR SCATTERED AFTERNOON AND EVENING STORMS EACH DAY. HIGHS SHOULD RANGE FROM THE LOW AND MID 90S WITH OVERNIGHT LOWS IN THE LOW TO MID 70S. && .AVIATION...INCREASING CLOUD COVER WILL LIMIT COVERAGE OF STRONGER CONVECTION OVER THE AREA INTO THE REST OF THE AFTERNOON. HOWEVER TEMPO IFR/MVFR WILL OCCUR WITH AREAS OF RAIN OR SCATTERED TSRAS THROUGH 00Z. ANY ISOLATED LINGERING EVENING CONVECTION SHOULD END BY 04Z WITH VFR CONDS OVERNIGHT. S/SW FLOW OVER THE REGION TOMORROW WILL KEEP SCATTERED AFTERNOON SHOWERS/STORMS IN THE FORECAST...PRODUCING TEMPO IFR/MVFR CONDS MAINLY AFT 18Z. && .MARINE... TONIGHT/MON...RIDGE AXIS OVER SOUTH FLORIDA WILL BUILD SLIGHTLY NORTHWARD INTO TOMORROW...TOWARD LAKE OKEECHOBEE. OFFSHORE MOVING SHOWERS AND STORMS WILL PERSIST INTO THE EVENING HOURS AND THEN DIMINISH PAST MIDNIGHT TONIGHT. S/SW WINDS WILL REMAINING RELATIVELY LIGHT AROUND 10 KNOTS OR LESS WITH SEAS RANGING FROM 1-3 FEET. SCATTERED OFFSHORE MOVING STORMS WILL CONTINUE TO BE A CONCERN FOR MARINERS MONDAY...MAINLY OVER THE NEARSHORE WATERS FROM MID TO LATE AFTERNOON. TUE-THU...HIGH PRESSURE RIDGE WILL REMAIN OVER CENTRAL/SOUTH FLORIDA. WINDS WILL REMAIN OUT OF THE SOUTH TO SOUTHWEST BELOW 15 KNOTS WITH SEAS RANGING FROM 1-3 FEET NEARSHORE TO 2-4 FEET OFFSHORE. MOISTURE WILL REMAIN HIGH ENOUGH TO KEEP A CHANCE FOR SHOWERS AND STORMS EACH DAY. A FEW OFFSHORE MOVING STORMS WILL ALSO BE POSSIBLE EACH AFTERNOON DUE TO A WEAK WEST TO SOUTHWEST STEERING FLOW. && .PRELIMINARY POINT TEMPS/POPS... DAB 74 91 74 91 / 20 50 30 40 MCO 75 92 75 93 / 20 50 20 40 MLB 74 90 74 91 / 20 50 30 40 VRB 74 89 74 90 / 20 50 30 40 LEE 76 92 76 92 / 20 50 20 40 SFB 76 92 76 93 / 20 50 30 40 ORL 75 92 77 93 / 20 50 20 40 FPR 73 90 73 90 / 20 50 30 40 && .MLB WATCHES/WARNINGS/ADVISORIES... FL...NONE. AM...NONE. && PUBLIC/MARINE...WEITLICH AVIATION...GUSEMAN IMPACT WX/RADAR...CRISTALDI
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MELBOURNE FL 1030 AM EDT SUN AUG 12 2012 AMZ550-552-555-570-572-575-FLZ041-044>047-053-054-058-059-064-141- 144-147-122100- COASTAL WATERS FROM FLAGLER BEACH TO VOLUSIA BREVARD COUNTY LINE OUT 20 NM- COASTAL WATERS FROM VOLUSIA BREVARD COUNTY LINE TO SEBASTIAN INLET OUT 20 NM- COASTAL WATERS FROM SEBASTIAN INLET TO JUPITER INLET OUT 20 NM- WATERS FROM FLAGLER BEACH TO VOLUSIA BREVARD COUNTY LINE 20 TO 60 NM OFFSHORE- WATERS FROM VOLUSIA BREVARD COUNTY LINE TO SEBASTIAN INLET 20 TO 60 NM OFFSHORE- WATERS FROM SEBASTIAN INLET TO JUPITER INLET 20 TO 60 NM OFFSHORE- INLAND VOLUSIA-NORTHERN LAKE-ORANGE-SEMINOLE-SOUTHERN BREVARD- OSCEOLA-INDIAN RIVER-OKEECHOBEE-ST. LUCIE-MARTIN-COASTAL VOLUSIA- SOUTHERN LAKE-NORTHERN BREVARD- 1030 AM EDT SUN AUG 12 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR EAST CENTRAL FLORIDA. .DAY ONE...TODAY AND TONIGHT. .THUNDERSTORM IMPACT... A DEEP LAYER OF MOIST SOUTHWEST FLOW WILL CONTINUE. DAYTIME HEATING WILL GENERATE SCATTERED AFTERNOON STORMS ALONG THE EAST AND WEST COAST SEA BREEZE BOUNDARIES. STORMS SHOULD LINGER INTO THE EVENING HOURS. THE HIGHEST COVERAGE IS EXPECTED FROM AROUND ORLANDO AND LAKE OKEECHOBEE EASTWARD TO THE SPACE AND TREASURE COASTS. THE MAIN STORM HAZARDS WILL BE FREQUENT LIGHTNING STRIKES AND GUSTY WINDS IN A FEW STRONGER STORMS. STORM MOTION WILL BE NORTHEAST AT NEAR 15 MPH. .FLOOD IMPACT... SOME STORMS ALONG BOUNDARY COLLISIONS WILL PRODUCE RAINFALL AMOUNTS OF 1 TO 3 INCHES...WHICH MAY CAUSE LOCAL PONDING OF WATER ON ROADS AND IN OTHER POORLY DRAINED LOW LYING AREAS. .MARINE THUNDERSTORM GUST IMPACT... SCATTERED STORMS DURING THE AFTERNOON AND EVENING WILL MOVE NORTHEAST 10 TO 15 KNOTS OVER THE MAINLAND AND CROSS THE COASTLINE. ISOLATED STRONG STORMS WILL BE CAPABLE OF PRODUCING WIND GUSTS OVER 34 KNOTS ALONG WITH TORRENTIAL DOWNPOURS AND FREQUENT LIGHTNING STRIKES. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. DEEP LAYER MOISTURE IS FORECAST TO REMAIN ABOVE NORMAL INTO LATE WEEK. THEREFORE..SCATTERED AFTERNOON STORMS ARE EXPECTED TO CONTINUE ACROSS MOST SECTIONS. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY. LASCODY/CRISTALDI
The Melbourne radar (KMLB), 1 km away, was scanning. The volume nearest the first event began at 19:23 UTC.
1 funnel cloud. Local standard time, as filed.
A SKYWARN spotter on Cheyenne Avenue in Melbourne observed a funnel cloud just southeast of their location. The funnel cloud did not touch down but was accompanied by strong wind gusts.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2012Every state in 2012This day in weather historyWarnings in Florida, August 2012
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 390743.